This is an appeal from the issuance of a peremptory writ of mandamus by the circuit court.
Petitioner operates a theater in Portland. He scheduled a two-week showing of two films entitled “Love Robots” and “Little Girls.” On the first day of the showing a deputy district attorney attended a performance. The deputy thereafter filed an affidavit and made application to a district judge for a search warrant to search petitioner’s theater and to seize the films. The ground asserted as a basis for the warrant ivas the purported dissemination of obscene matter in violation of ORS 167.151. The police, *325on the second day of the showing, seized the films pursuant to the warrant without a prior adversary hearing. Petitioner was not arrested. Thereafter, petitioner filed with the district judge a motion to quash the warrant, to suppress the seized films as evidence, and for their return. The principal basis for the motion was his claim that before First Amendment material may be seized on the ground that it is obscene, there must be a prior adversary hearing on that issue. The motion was denied by the district judge, and petitioner then filed the mandamus proceeding in question in circuit court. A peremptory writ issued directing the district judge to quash the warrant and to return the films. The district judge appealed.
The question presented by the appeal is whether mandamus brought in the circuit court was a proper remedy to compel the district judge to vacate his ruling. The district judge contends that mandamus does not lie because the writ cannot be used to dictate the exercise of judicial judgment unless the issue is so clear as to reduce the judicial act to the quality of a ministerial one. He relies on numerous decisions of this court, including State ex rel v. Malheur County Court, 54 Or 255, 101 P 907, 103 P 446 (1909). This was a case in which the County Court of Malheur County refused to except the City of Yale from the application of a county prohibition lav/. In holding that mandamus would not lie to test the propriety of the county court’s ruling, this court said at 259:
“* * * In the present case the court was confronted with a delicate question of law. If the City of Yale was exempt, by the conditions of its charter, from the operation of the local option law, it was the duty of the court to make that exemp*326tion apparent in its order. If it was subject to the provisions of that law, it was its duty to make an order which would apply to the county as a whole. A question of law was before it to be decided, and, in passing upon it, the court acted just as much in a judicial capacity as we do in passing upon the same question on appeal. We think the court below was correct in holding that it had no power to compel the county court to amend its order on prohibition.”
He also relies on the following language from State ex rel v. Ekwall, 144 Or 672, 681, 26 P2d 52 (1933):
“* * * There was also a dispute upon the question of whether service upon Smith, its president, by reason of his being in Oregon and transacting business for the corporation at the time the service was made, was valid. The determination of these questions required the exercise of judgment upon the part of the trial court in deciding whether the motion to quash should be overruled or sustained, and, in making such determination, the court was acting judicially and not performing a mere ministerial function. * * *.”
A no less august body than the United States Supreme Court has used the following similar language in Wilbur v. United States, 281 US 206, 218, 50 S Ct 320, 74 L ed 809 (1930):
“* * * Where the duty in a particular situation is so plainly prescribed as to be free from doubt and equivalent to a positive command it is regarded as being so far ministerial that its performance may be compelled by mandamus, unless there be provision or implication to the contrary. But where the duty is not thus plainly prescribed but depends upon a statute or statutes the construction or application of which is not free from doubt, it is regarded as involving the character of *327judgment or discretion which cannot be controlled by mandamus.” (footnotes omitted).
The issue thus drawn is whether, where there is no dispute in the facts, mandamus will lie to decide in a certain way an especially complicated question of law, the answer to which is in extreme doubt and the solution of which requires the use of legal judgment and acumen. The Oregon statute on mandamus, OES 34.110, is as follows:
“A writ of mandamus may be issued to any inferior court, * * * to compel the performance of an act which the law specially enjoins, as a duty resulting from an office, * * * but though the writ may require such court, * * * to exercise its * ® * judgment, or proceed to the discharge of any of its * * * functions, it shall not control judicial discretion. The writ shall not be issued * ÍS * where there is a plain, speedy and adequate remedy in the ordinary course of the law.”
The statements of this court in its decisions concerning the use of mandamus have been fairly uniform. Generally, the court has said that when the facts are not in dispute and there is a clear rule of law requiring the matter to be decided in a certain way, mandamus will lie. It has also said that mandamus will not lie to control the exercise of discretion or judgment. While, at times, as previously demonstrated, the court has refused the use of mandamus because of difficult legal problems being involved, more frequently it has used the writ to decide problems where the law was far from clear and where the exercise of legal judgment was required for a solution. As an illustration, this court has often used the writ to decide difficult questions of law involving the adequacy of substituted service of summons. State *328ex rel Carroll v. Redding, 245 Or 81, 418 P2d 846 (1966); State ex rel v. Latourette, 168 Or 584, 125 P2d 750 (1942); State ex rel Hupp etc. Corp. v. Kanzler, 129 Or 85, 276 P 273 (1929); State ex rel Sullivan v. Tazwell, 123 Or 326, 262 P 220 (1927). The cases in which the court has so used mandamus are not limited to those testing the adequacy of substituted service of summons. See the following cases where difficult questions of law have been decided in the interpretations of statutes and the constitution: State ex rel v. Malheur County Court, 185 Or 392, 203 P2d 305 (1949); State ex rel Pierce v. Slusher, 119 Or 141, 248 P 358 (1926); City of Astoria v. Cornelius et al, 119 Or 264, 240 P 233 (1925); Peterson v. Lewis, 78 Or 641, 154 P 101 (1915); Crawford v. School District No. 7, 68 Or 388, 137 P 217, 50 LRA (NS) 147 (1913); State v. Ware, 13 Or 380, 10 P 885 (1886).
It is plain, regardless of what this court has said to the contrary, that mandamus has repeatedly been used to require public officers, including inferior courts, to act in a certain way where the applicable law governing their actions was legitimately in dispute. There is ample authority elsewhere that justifies this use of the writ. F. Ferris, Extraordinary Legal Remedies § 210 (1926), has the following statement :
“Notwithstanding that courts will not grant mandamus to control discretion, the rule does not apply to preliminary questions of law. It applies only to the act to be commanded by the writ.* The character of a purely preliminary question, though judicial, does not test the right to mandamus because the decision of such a question is a mere incident leading up to the main function or act.*” (*footnotes omitted).
*329In Poucher v. Teachers’ Retirement Board, 130 Misc 896, 225 NYS 176, 178-79 (1927), the court used the following language:
“The sole question, then, is one of law, * * *.”
“* * * [B]espondent contends that mandamus will only lie where there is a clear legal right, and as an important question of law is involved, which admits of a reasonable doubt or controversy, the petitioner should be relegated to an action at law against the retirement board. There is no reason why difficult questions of law cannot be determined upon this application, as well as in an action at law. The clear legal right referred to in the cases such as Matter of Whitman, No. 1, 225 .N.Y. 1, 121 N.E. 479, means a right which is inferable as a matter of law from uncontroverted facts, regardless of the difficulty of the legal question to be decided. * * *.”
For similar language, also see Stewart v. Wilson Printing Co., 210 Ala 624, 627-28, 99 So 92, 96 (1924); Robinson v. Enking, 58 Idaho 24, 31-32, 69 P2d 603, 606 (1937); Construction Co. v, Sedgwick County, 100 Kan 394, 396, 164 P 281, 282-83 (1917); Cahill v. Mayor and City Council of Baltimore, 173 Md 450, 455, 196 A 305, 307 (1937); Perkins v. Burks, 336 Mo 248, 254, 78 SW2d 845, 848 (1934); Fooshee v. Martin, 184 Okla 554, 557, 88 P2d 900, 903 (1939); State v. Town Council South Kingstown, 18 RI 258, 266, 27 A 599, 602, 22 TEA 65 (1893). Finally, the following language is found in 55 CJS Mandamus § 53 (1948):
“A ‘clear legal right,’ within the meaning of the rule under consideration, means a right clearly founded in, or granted by, law;* a right which is inferable as a matter of law from uncontroverted facts regardless of the difficulty of the legal question to be decided. * * *.” (*footnote omitted).
*330It appears that much of the difficulty in the case law revolves around the use of the terms “discretion” and “judgment”; i.e., in the case of a judicial officer, “judicial discretion” as differentiated from “judicial judgment” or “acting judicially.” They have been confused and used interchangeably. “Discretion” refers to the power or privilege to act unhampered by a legal rule. It describes a situation where a choice can be made among several courses of action, any one of which is legally permissible and not subject to review. In such a situation mandamus or any other method of review is inappropriate. The present case does not pose such a situation. Petitioner either is entitled to have the warrant quashed and his property returned or he is not. There is only one legally permissible answer. The exercise of “judgment” means the formation of an opinion concerning something by exercising one’s mind upon it. Some courts, including this court, have, at times, used the terms interchangeably and, therefore, have erroneously said that mandamus will not lie to decide difficult questions of law because the exercise of judgment, judicial or official, was necessary for their solution. State ex rel Ricco v. Biggs, 198 Or 413, 422, 255 P2d 1055, 38 ALR2d 720 (1953); State ex rel Ekwall, 144 Or 672, 681, 26 P2d 52 (1933); and State ex rel Malheur County Court, 54 Or 255, 258, 101 P 907, 103 P 446 (1909).
It is also apparent that in a mandamus context, “clear rule of law” and “clear legal right” have been used erroneously at times to describe a situation where there can be no dispute as to the proper legal theory rather than a situation where a right is inferable as a matter of law from uncontroverted facts. See Poucher v. Teachers’ Retirement Board, supra, and 55 CJS Mandamus §53 (1948). We are now satis*331fied that in an otherwise proper case, mandamus may be used to decide disputed and difficult questions of law.
This brings us to the additional requirement for the use of the writ of mandamus, that there be no “plain, speedy and adequate remedy in the ordinary course of the law.” ORS 34.110, supra. There is no doubt that the effect of its use in this case amounts to an interlocutory appeal of an important legal question involved in any criminal proceeding arising out of the showing of the films. This raises the question whether the right to an appeal from a subsequent conviction is a speedy and adequate remedy. Petitioner claims that it is not. He urges that a First Amendment right has been violated in a manner amounting to prepublication censorship and, therefore, the use of mandamus is justified. He argues that the dissemination of information by the showing of the films has been foreclosed by their seizure and, if petitioner is proven ultimately to be correct in his contention that the seizure was illegal, the use of mandamus will permit an earlier resumption of their showing, thus protecting not only petitioner’s right to show the film but the public’s right to see it.
Experience indicates that the average criminal case is brought to trial in three months in Multnomah County.① The disposition of this mandamus proceeding at the circuit court level took 18 days. Presuming that an appeal to this court from a conviction would have consumed the same time as has the appeal from the disposition of the mandamus proceeding, mandamus could result in a net time saving of approximately *3322yz months. As a practical matter, the trial record from a conviction ordinarily includes a transcript of testimony, and such a record normally takes more time to prepare than does the record in a mandamus proceeding. Therefore, the time saving by way of mandamus may be considerably more than 2% months.
In deciding if a proceeding in the nature of an interlocutory appeal should be allowed, whether by way of mandamus or otherwise, courts must balance considerations of judicial administration with petitioner’s choice of a remedy. One consideration is whether or not more litigation and expense to the parties as well as burden on the courts are likely to result from interlocutory appeals. There is a difference between using mandamus to decide the basic dispute between the parties and using it to decide an important but possibly nonconelusive issue in a broader controversy. The basic question is whether or not petitioner violated the criminal law. The ruling on mandamus concerning the validity of the seizure of petitioner’s films may or may not be fatal to the prosecution, depending on which way the ruling is made; and, if the ruling is against the state, depending also upon the other evidence the state may have of petitioner’s guilt. In no event is it, strictly speaking, conclusive on the ultimate issue of guilt or innocence.
In the present case, if the magistrate’s refusal to quash the warrant is a ruling that must be tested by an appeal from a judgment of conviction, the legality of the seizure might never arise in this court. There would be three opportunities for the litigation to be otherwise disposed of at the trial level: 1) the failure of the grand jury to indict; 2) the granting of a motion to quash the evidence by the trial court; and 3) the failure of the jury to convict. Any one of these *333dispositions would result in the restoration to petitioner of his films, and no appeal by the state would lie. Such a disposition would be much faster and more effective than a disposition by way of mandamus which would almost always go the appellate route.
A situation almost identical with the present case occurs when the propriety of searches and seizures is tested in the face of claimed Fourth Amendment violations in which there is no dispute concerning the facts. In such situations, in this state, defendants have resorted to an appeal to protest a lower court’s ruling on the propriety of the seizure. We how of no instance where this court has permitted such a test by way of mandamus. Similarly, mandamus has not been available to test the propriety of a trial court’s ruling on demurrer that an indictment is sufficient. The litigation continues and the ruling is tested by appeal if conviction results. If there is no conviction, the issue is moot. In a criminal litigation context, an appeal has heretofore been considered an adequate remedy in similar situations.
In addition, we believe the present use of mandamus would be detrimental to a prompt trial. The accomplishment of justice may be defeated by the delay of the ultimate trial of the case until an issue of law has been decided which will almost certainly be appealed to the Supreme Court. The delay caused by the present appeal is a graphic illustration. Also, it must be remembered that mandamus, if used in this manner, can be a two-edged sword. If petitioner is permitted to use mandamus to test the propriety of the magistrate’s ruling, in fairness, it is difficult to say that the state may not also do so if the ruling is adverse to it.
Petitioner’s use of mandamus in the present case *334would afford him no means of securing the return of his film with sufficient promptness to allow him to resume his two weeks’ showing. The state and petitioner are still litigating concerning it. The sole First Amendment effect of the use of mandamus, if successful, would be to hasten by three or four months the time at which the petitioner could eventually resume the showing of that particular copy of the film. The possible benefits to be bestowed by mandamus are too minimal to constitute a sufficient reason to deviate from established methods of testing the legality of similar police activity in criminal cases.-
This court by decision and the legislature by statute have a long record of regarding the device of an interlocutory appeal with disfavor. See Dlouhy v. Simpson Timber Co., 247 Or 571, 431 P2d 846 (1967), and cases and statutes cited therein.
Petitioner filed a motion to dismiss the district judge’s appeal. The motion was denied with leave to renew the motion in petitioner’s brief and upon oral argument. Petitioner claims that this court does not have jurisdiction of the appeal because the district judge failed to name petitioner in his notice of appeal in conformance with ORS 19.029(2). The title of the case contained in the notice did include petitioner’s name. We believe this was sufficient compliance with the statute. No one could possibly have been misled.
The judgment of the trial court is reversed and remanded with instructions to dismiss the writ.
Fifteenth Annual Report Relating to Judicial Administration in the Courts of Oregon (1968).